Seiko Cal. 4577 - 577

The Seiko 4577-577 represents an important milestone in Seiko's 1977 lineup. Powered by the 4577 caliber with 36j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-c7a55c01e006]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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